What does MAF or VAF a circuit low input mean?
P0102 – Mass or Volume Air Flow Circuit Low Input. P0102 is an OBDII trouble code indicating that the mass air flow sensor (MAF) is reporting inaccurate values. A MAF that is reading too low will then result in not enough fuel being injected, and as a result the engine would be operating in a lean condition.
How do I know if my MAF sensor is bad?
Symptoms of a Faulty Mass Air Flow Sensor
- The engine is very hard to start or turn over.
- The engine stalls shortly after starting.
- The engine hesitates or drags while under load or idle.
- Hesitation and jerking during acceleration.
- The engine hiccups.
- Excessively rich or lean idling.
What does error code P0102?
A P0102 error code means that there’s insufficient air traveling through your air filter. Most sensors aren’t able to measure the exact airflow, but take a small portion of the intake air and use a calculation to arrive at the total volume and density.
What does error code P0101 mean?
mass air flow
Code P0101 Meaning The mass air flow (MAF) sensor measures the amount of air entering the engine. Check engine light code P0101 is set when the measurement of air entering the engine by the mass air flow sensor is outside of the manufacturer’s specified range.
What happens if you unplug your MAF sensor?
If you unplug the mass air flow sensor the car will start. If you try to plug it in while it’s running the car will die.
What causes low voltage on a mass air flow sensor?
The MAF Sensor has low voltage output problems which may have several causes. The source of the problem is the sensor range voltage is lower than normal or required by the ECU to function properly. The most obvious problem is restricted airflow from the air cleaner to the MAF sensor which can be a clogged air filter.
What does the code p0102 mean on a MAF sensor?
Mass Airflow (MAF) Circuit Low Voltage Input The code P0102 code is often associated with P0100, P0101, P0103 or P0104 trouble codes as they are closely related. What the P0102 code means P0102 is the general code for a problem with the Mass Airflow (MAF) Sensor having a low voltage output to the Engine Control Unit (ECU).
What’s the difference between p0100 and p0102?
This code is similar to P0100 – MAF sensor circuit malfunction. The difference between the two codes is that the PCM has identified the sensor output as faulty for a P0102 code. Hot-wire MAF sensors often become dirty causing a P0102 code. When diagnosing MAF sensor codes, understanding fuel trims is very important.
What causes the p0102 OBD-II trouble code?
The code P0102 code is often associated with P0100, P0101, P0103 or P0104 trouble codes as they are closely related. P0102 is the general code for a problem with the Mass Airflow (MAF) Sensor having a low voltage output to the Engine Control Unit ( ECU ). What causes the P0102 code?
What causes the mass airflow ( MAF ) sensor to have low voltage?
P0102 is the general code for a problem with the Mass Airflow (MAF) Sensor having a low voltage output to the Engine Control Unit (ECU). What causes the P0102 code? The MAF Sensor has low voltage output problems which may have several causes.